A1 COMPOSITE INSTALLATION

Target time 10 hours

This is an installation which includes a range of electrical wiring systems, each devised to test a Candidate's proficiency in particular aspects of electrical installation work. The electricity supply will be provided from a TN S three phase 4 wire 40OV system.

The illustration (Figure A) shows the layout of prefixed components on the test unit. Figure B shows the layout of the completed installation.

INSTALLATION ASPECTS SKILL ACTIVITY
PVC/SWA/PVC Cable 10mm˛ four core Measuring, cutting to length, installing and terminating between pre-fixed equipment.
Metal Conduit 20mm Measuring, cutting to length, filing and reaming, bending, threading, installing between pre-fixed equipment.
Main Equipotential and Supplementary Bonding Measuring, clipping and dressing, terminating and fixing bonding clamps on service pipes etc.
Mineral Insulated Cable (PVC sheathed) 4L 1.5mm˛ MICC Measuring, cutting to length, shaping, dressing, securing, terminating, glanding; identifying conductors and connecting between pre-fixed equipment.
Circuit Wiring - Lighting Circuit Install PVC insulated cables for the two-way and intermediate lighting circuit. Install key operated override 'on' switch adjacent to the intermediate switch.
Emergency Luminaire Install FP200 2 core and earth cable between the plastic dado trunking and 20mm end box. Connections to be to the Luminaire Support Coupler (LSC).
Industrial Socket Outlet (400V) Install and connect the 16A triple pole and earth socket outlet to the output terminals of the 20A TP&N switchfuse.
Three Phase Motor Circuit Installing cables in trunking and conduit; terminating and making connections between a three phase squirrel cage motor, a motor starter, a remote start/stop/inch station and run and trip warning lights, with the aid of a wiring diagram (Figure C).
SRCD Install cables in metal trunking to SRCD.
Circuit Wiring - Ring Circuit Installing cables in metal and PVC trunking and PVC conduit; terminating and making connections from the distribution board to:
  • a ring circuit of 13A switch socket outlets.
  • a spur to a 13A socket outlet including flexible cable to a tubular heater via a 13A plug.


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